- 著者
- IWASAKI TAKAYA TONO AKITAKA AOKI KYOKO SEO AKIHIRO MURAKAMI NORIAKI
- 出版者
- 日本植物分類学会
- 雑誌
- Acta phytotaxonomica et geobotanica : APG (ISSN:13467565)
- 巻号頁・発行日
- vol.61, no.1, pp.1-20, 2010-06-30
- 被引用文献数
- 1
A phylogeographic study of two species of Carpinus, C. japonica Blume and C. tschonoskii Maxim. (Betulaceae), based on the distribution patterns of their chloroplast DNA haplotypes, is reported. In Japan, these species are mainly distributed in Pacific-type deciduous broad-leaved forests. Using 439-440 and 627-629bp nucleotide sequences of noncoding regions of chloroplast DNA, we detected 5 and 6 haplotypes among 217 and 181 individuals sampled from 52 and 49 populations of C. japonica and C. tschonoskii, respectively. The geographic distribution patterns of the haplotypes were highly structured. We investigated the common phylogeographic patterns between the two species that would indicate the influence of common historical factors such as climate change since the last glacial maximum (LGM). Based on our results, we concluded that the Pacific-type Japanese deciduous broad-leaved forests were split into at least three refugia during the LGM. After the LGM, the species expanded to northern areas or moved to higher altitudes from each refugium, thus now occupying northeastern, central, and southwestern Japan.
- 著者
- ODA JIRO NAGAMASU HIDETOSHI
- 出版者
- 日本植物分類学会
- 雑誌
- Acta phytotaxonomica et geobotanica : APG (ISSN:13467565)
- 巻号頁・発行日
- vol.61, no.3, pp.145-150, 2011-02-21
Carex noguchii J. Oda & Nagam. is described as new to science. It is similar to C. biwensis Franch. in having irregularly trigonous to pentagonous culms, many-flowered (ca. 30) spikes, and short (1.8-2.0mm long) perigynia. Carex noguchii is distinguished from the latter, however, by the dark brown basal leaf sheaths, wider and longer leaves, orbicular-ovoid perigynia, and achenes loosely enclosed by the perigynia, and micromorphologically by the absence of satellite bodies.